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| 1 /* | 1 /* |
| 2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * | 7 * |
| 8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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| 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 */ | 27 */ |
| 28 | 28 |
| 29 #include "config.h" | 29 #include "config.h" |
| 30 | 30 |
| 31 #if ENABLE(WEB_AUDIO) | 31 #if ENABLE(WEB_AUDIO) |
| 32 | 32 |
| 33 #include "Biquad.h" | 33 #include "core/platform/audio/Biquad.h" |
| 34 | 34 |
| 35 #include "DenormalDisabler.h" | 35 #include <stdio.h> |
| 36 #include <algorithm> | 36 #include <algorithm> |
| 37 #include <stdio.h> | 37 #include "core/platform/audio/DenormalDisabler.h" |
| 38 #include <wtf/MathExtras.h> | 38 #include <wtf/MathExtras.h> |
| 39 | 39 |
| 40 #if OS(DARWIN) | 40 #if OS(DARWIN) |
| 41 #include <Accelerate/Accelerate.h> | 41 #include <Accelerate/Accelerate.h> |
| 42 #endif | 42 #endif |
| 43 | 43 |
| 44 namespace WebCore { | 44 namespace WebCore { |
| 45 | 45 |
| 46 const int kBufferSize = 1024; | 46 const int kBufferSize = 1024; |
| 47 | 47 |
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| 578 Complex denominator = Complex(1, 0) + (a1 + a2 * z) * z; | 578 Complex denominator = Complex(1, 0) + (a1 + a2 * z) * z; |
| 579 Complex response = numerator / denominator; | 579 Complex response = numerator / denominator; |
| 580 magResponse[k] = static_cast<float>(abs(response)); | 580 magResponse[k] = static_cast<float>(abs(response)); |
| 581 phaseResponse[k] = static_cast<float>(atan2(imag(response), real(respons
e))); | 581 phaseResponse[k] = static_cast<float>(atan2(imag(response), real(respons
e))); |
| 582 } | 582 } |
| 583 } | 583 } |
| 584 | 584 |
| 585 } // namespace WebCore | 585 } // namespace WebCore |
| 586 | 586 |
| 587 #endif // ENABLE(WEB_AUDIO) | 587 #endif // ENABLE(WEB_AUDIO) |
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